Simple switch tester.
Versions with one switch, 2x2 and 4x6 switches.
The holes are 14mm - I tested multiple switches and all of them fit, even though a couple were a really snug fit. These were printed on an ender 3 with PLA, 0.2mm layers and 10% infill.
Tip - set top and bottom line directions to [90, 180] to make the layers not diagonal, which looks better in my opinion.
My very first 3D modeling project, so I wanted to do something ultra simple. I recreated an acrylic switch tester I had.